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Finding the Fourth Proportional to 228,566.60, 342,193.80 and 139,993.10

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Solution

The fourth proportional to 228,566.60, 342,193.80 and 139,993.10 is: 209,587.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,566.60 : 342,193.80 = 139,993.10 : x
  2. Step 2: Convert to fraction form
    228,566.60/342,193.80 = 139,993.10/x
  3. Step 3: Cross multiply
    228,566.60x = 342,193.80 × 139,993.10
  4. Step 4: Simplify right side
    228,566.60x = 47,904,770,862.78
  5. Step 5: Solve for x
    x = 47,904,770,862.78/228,566.60
  6. Step 6: Final answer
    x = 209,587.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.